71128504355 has 16 divisors (see below), whose sum is σ = 86858663904. Its totient is φ = 55902094080.

The previous prime is 71128504327. The next prime is 71128504379. The reversal of 71128504355 is 55340582117.

It is a happy number.

It is not a de Polignac number, because 71128504355 - 2⁸ = 71128504099 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111239 + ... + 393231.

It is an arithmetic number, because the mean of its divisors is an integer number (5428666494).

Almost surely, 2^71128504355 is an apocalyptic number.

71128504355 is a deficient number, since it is larger than the sum of its proper divisors (15730159549).

71128504355 is a wasteful number, since it uses less digits than its factorization.

71128504355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282886.

The product of its (nonzero) digits is 168000, while the sum is 41.

The spelling of 71128504355 in words is "seventy-one billion, one hundred twenty-eight million, five hundred four thousand, three hundred fifty-five".